Enum Qt::HighDpiScaleFactorRoundingPolicy values are defined as Qt::Round, Qt::Ceil and so on, but it needs to be in form of Qt::HighDpiScaleFactorRoundingPolicy::Round

Documentation link: https://doc.qt.io/qt-5/qt.html#HighDpiScaleFactorRoundingPolicy-enum

If Qt::Round is used in QApplication::setHighDpiScaleFactorRoundingPolicy(), it gives a compile time error.